Home / 57,057.84-78,761.43-51,078.78

Finding the Fourth Proportional to 57,057.84, 78,761.43 and 51,078.78

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Solution

The fourth proportional to 57,057.84, 78,761.43 and 51,078.78 is: 70,508.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,057.84 : 78,761.43 = 51,078.78 : x
  2. Step 2: Convert to fraction form
    57,057.84/78,761.43 = 51,078.78/x
  3. Step 3: Cross multiply
    57,057.84x = 78,761.43 × 51,078.78
  4. Step 4: Simplify right side
    57,057.84x = 4,023,037,755.46
  5. Step 5: Solve for x
    x = 4,023,037,755.46/57,057.84
  6. Step 6: Final answer
    x = 70,508.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.